Method of making housings for automobile transmission-gear



I. E. MURRAY, 1a., AND J. B. MURRAY. METHOD OF MAKING HOUSINGS FOR AUTOMOBILE TRANSMISSION GEAR.

' APPLICATION FILED OCT. 8, 1919. I 1 350, 30; Patented Aug. 24, 1920.

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UNITED STATES PATENT OFFICE.

THOMAS E. MURRAY, JR, AND JOSEPH B. MURRAY, 01 BROOKLYN, NEW YORK.

METHOD OF MAKING HOUSINGS FOR AUTOMOBILE TRANSMISSION-GEAR.

Specification of Letters Patent.

Application filed October 8, 1919. Serial No. 329,353.

To all whom it may concern Be it known that we, THOMAS E. Mun- RAY, Jr., and JOSEPH B. MURRAY, citizens of the county of Kings and State of New ork, have invented a certain new and usef Im provement in Methods of Making Housings for Automobile Transmission-Gear, of which the United States, residing at Brookljf, in

the following is a specification.

'The invention is a method of making a .metal housing for transmission gear, the

said housing consisting of two straight tubular end portions and a middle portion of greater diameter than said end portions, and consists in the steps more particularly set forth in the claims.

In the accompanying drawing-- Figure l is a longitudinal section on the line 1, 1 of Fig. 4, showing the two half sections of our housing in position for welding. Fig. 2 is a similar section, showing the welded half sections cut transversely apart on the line a:, w of Fig, 1, and having the ends of the enlarged portions flanged. Fig. 3 is an elevation of the completed housing, showing the flanges united by bolts and nuts. Fig. 4 is an end view of the completed housing.

Similar letters of reference parts. I

In making our housing, we first produce by stamping or pressing, two similar and interchangeable longitudinal half sections A, Bof sheet metal, each section comprising a middle enlarged concavo-convex portion which comprises two hemisphericalportions D, E, with an intervening portion F, these several portions being integral. Adjacent to andintegral with the hemispherical-portions D, E are straight semi-tubular portions G, H. The twolongitudinal half sections A, B are placed with their edges in registry and electrically welded together. We then divide the welded objects into two similar parts transversely on the plane of the line at, :12, so that half of the portion F lies in' each division. By any suitable means, we

indicate like i and fifth, placing. said then turn the half portions of F outwardly to form flanges I, J, and after placing said flanges in registry we unite them preferably by bolts and nuts K. The object of dividing the parts is to permit of the" introduction of the mechanism to inclosed in the housing, which is done before the said parts are united by the bolts and nuts. In the walls of the middle enlarged portion are semicircular recesses L which register when the parts are assembled, and permit of the connection of the power transmitting mechanism to the inclosed mechanism in the usual way. The flanges maybe united by rivets, or in any other desired way; but we prefer the detachable unionefiected by the bolts and nuts, so that, if desired, by releasing the same, more convenient access can be had to the inclosed mechanism in case of injury or needed replacement of the same or of parts thereof.

We claim:

1. The method of making a housing of the type set forth, which consists in first forming of sheet metal two interchangeable longitudinal half sections of said housing of substantially the shape set forth; second, placing the edges of said sections in registry and electrically welding them together; third, transversely dividing 's'a'id welded ob- Patented- Aug. 24, 1920.

ject at the middle of the enlarged portion thereof; fourth, bending outwardly the edges of said divided parts to form flanges, v flanges in registry and uniting the same.

2. The method of. making a housing, as set forth in claim 1, the fifth step thereof further including the uniting of said flanges detachably from one another.

Intestimony whereof we have afiixed our signatures in presence of two witnesses.

THOMAS E. MURRAY, JR. JOSEPH B. MURRA Witnesses: I

- .Gnn'rnonn T. PORTER,

' MAY T. MCGARRY. 

